Living without hatred

I went out with a school friend of mine recently, (actually on my birthday). Catching up with her after a long time made me feel terribly (I know it’s not the appropriate word. But that is how I felt) nice. The best part of being with her is that you can easily catch up exactly from where you had left it. And all this is wonderfully effortless. We discuss things in general and indulge in those girly conversations. (Mind you girly not bitchy. Something like who broke up with whom, who patched up with whom, who's seeing whom). We sat for almost close to two hours. And as it generally happens with close friends, our conversations went in all directions. Suddenly, she said about something she hated. As a matter of fact, I said, "Why can't I hate things?"
This has been the question which has stayed with me for quite some time now. Not that my life is picture perfect and everything happens just according to my wish. But, somehow, I can't bring myself to hating people. I may stop talking, stay away, stay aloof, but in the wildest of my dreams too, I can't hate someone or wish bad for someone. Why, I don't know?
I vaguely remember as a kid, I had read somewhere that hatred is always a losing proposition. And that had remained etched in my mind. May be that is the reason. Actually, I am unable to figure that out.

Manjiri